Sunday, January 13, 2013

What is a Lens servo?

I want to buy a Nikon D5200.In nikon site I found this on specification Table. Lens Servo: Autofocus (AF): Single-servo AF (AF-S); continuous-servo AF (AF-C); auto AF-S/AF-C selection (AF-A); predictive focus tracking activated automatically according to subject status Manual focus (MF): Electronic rangefinder can be used.
Now please somebody explain me what is the lens servo.
>>> What is a Lens servo?